Two large speakers standing upright and filled with round and oval stones make the visible audible as stones are knocked against each other, many at once and sometimes rhythmically, often without structure. The acoustic process is without end and without climax. Depending on the nature of the location, the room acoustics have a lasting effect on the listening process and the meaning of what is heard.

The clicking sound of pairs of stones being knocked together turns the view towards the dialogue.

• 5 Räume, Neuer Berliner Kunstverein, Berlin 1992

• Membran, Stadtgalerie, Saarbrücken 1993

• Ulrich Eller – Klangkunst, Galerie Vostell, Berlin 2003

• Klangraum Flensburg, Museumsberg, Flensburg 2007

2 pressure chamber speakers; stones; cables; 2-channel composition; electronical equipment.